/*
 * Copyright (c) "Neo4j"
 * Neo4j Sweden AB [http://neo4j.com]
 *
 * This file is part of Neo4j.
 *
 * Neo4j is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.neo4j.cypher.internal.runtime.interpreted.pipes

import org.neo4j.cypher.internal.logical.plans.LogicalPlan
import org.neo4j.cypher.internal.logical.plans.LogicalPlans

/**
 * Maps single logical plan operators to their respective pipes. Does not recurse.
 */
trait PipeMapper extends LogicalPlans.Mapper[Pipe] {
  override def onLeaf(plan: LogicalPlan): Pipe
  override def onOneChildPlan(plan: LogicalPlan, source: Pipe): Pipe
  override def onTwoChildPlan(plan: LogicalPlan, lhs: Pipe, rhs: Pipe): Pipe
}

case class PipeTreeBuilder(pipeMapper: PipeMapper) {

  def build(logicalPlan: LogicalPlan): Pipe = {
    LogicalPlans.map(logicalPlan, pipeMapper)
  }
}
